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std::valarray::resize

STD：：valArray：：调整大小

void resize( std::size_t count, T value = T() ​​

调整值数组的大小以包含count要素和分配value每个元素。

此函数使数组中所有指针和对元素的引用无效。

参数

count-new size of the container
value-the value to initialize the new elements with

返回值

%280%29

例

二次

#include <valarray>
#include <iostream>
int main()
{
    std::valarray<int> v{1,2,3};
    v.resize(10
    for(int n: v) std::cout << n << ' ';
    std::cout << '\n';
}

二次

产出：

二次

0 0 0 0 0 0 0 0 0 0

二次

另见

sizereturns the size of valarray (public member function)

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